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Kinematic characteristics of the Milky Way globular clusters based on Gaia DR2 data

Chemerynska, I. V.; Ishchenko, M. V.; Sobolenko, M. O. +2 more

Using the data from Gaia (ESA) Data Release 2 we performed the orbital calculations of globular clusters (GCs) of the Milky Way. To explore possible close encounters (or collisions) between the GCs, using our own developed high-order φ-GRAPE code, we integrated backward and forward orbits of 119 objects with reliable positions and proper motions. …